TW539629B - Tire-use rubber-covered fabric, its production method, the production method for pneumatic tire using rubber-covered fabric, and pneumatic tire - Google Patents

Abstract

A tire-use rubber-covered fabric (10) formed by covering with rubber a tire fabric (14) that is woven by wefts (11) and warps (12) consisting of tire cords (13), the wefts (11) with a braking elongation of 4-30% and a breaking strength of 3-15 N.

Description

) 39629 A7 B7 --- 'V. Description of the invention (丨) [Detailed description of the invention] [Technical field] The present invention relates to rubber-containing fabrics for tires, a method for manufacturing the same, and manufacture of pneumatic tires containing rubber fabrics. A method and a pneumatic tire which ensure the joint strength of a caixass-ply connection portion, and suppress the decrease in uniformity caused by the connection portion, and improve the appearance quality and uniformity of the tire. [Background Technology] The carcass layer A of the pneumatic tire is a curtain fabric c woven with a longitudinal line a and a transverse line b composed of carcass cords as shown in FIG. 9 (A), and the curtain fabric c The upper rubber (topping rubber) is rubber-coated to form a long rubberized fabric d, and the long rubberized fabric d is regarded as the original reverse. In detail, the rubberized fabric d is cut into a plurality of cutting pieces dl at an angle Θ (the case of a radiating layer tire is about 75 to 90 °) at a desired angle from its side edges, and then the aforementioned side edges of each cutting piece dl are cut. Side (non-cutting side) end portions de and de are sequentially connected (primary connection "1) to form a connection layer f, and the carcass filaments thereof are aligned at the aforementioned angle 0 with respect to the longitudinal direction. Further, as shown in FIG. 9 (B), the connection layer f is cut in units of one circumference, wound around a drum in the circumferential direction, and connected at both ends fe and fe in the circumferential direction. (Secondary connection j2) to form a tubular carcass layer A. On the other hand, an overlap-joint is performed on the aforementioned primary connection jl and the secondary connection p. As shown in FIG. 10, the end portion de, between the de and the end portion 3 are applied to the Chinese National Standard (CNS). A4 size (210 X 297 mm) (Please read the precautions on the back before filling out this page) Loading ---- Order ------------ ·

V 539629 ΚΙ ____ Β7 ___ 5. Description of the Invention (X) Fe and fe are combined with each other and crimped. At this time, the connection portion j 'is formed so as to have a width "w" in which four or more carcass filaments a overlap each other in order to ensure necessary joint strength. However, in the case of the aforementioned overlapping joining, the difference in rigidity between the connecting portion j and the other portions becomes too large, which reduces uniformity and deteriorates uniformity, and causes problems such as the appearance of so-called bumps and depressions. In addition, in order to reduce the aforementioned problem of poor rigidity, it is better to make the width of the connecting portion ″ as the number of overlapping carcass wires a or less. However, in this case, the joint strength will be insufficient. In the case of A-shaping, there is a problem that the aforementioned connection portion j may be separated, and this connection method is abandoned. In view of this situation, as a result of investigations made by the present inventors, it was found that the horizontal line b has a great influence on the separation (opening) of the connection portion j. That is, the horizontal line b is formed of thin and weak organic fibers. The horizontal line is stretched in the circumferential direction during molding, and a force in the opening direction is generated at the connection portion j. In particular, the conventional horizontal line has a large elongation at break, 60 to 150%, and continuously performs an elongation action, thereby increasing the force in the aforementioned opening direction. When the elongation at break of the transverse line b is reduced to 30% or less and the breaking strength is reduced to 15N or less, it is found that the transverse line b is easily broken due to the tension at the time of molding. The number of overlapping wires a is less than two, and the separation (opening) of the connecting portion j can also be prevented. At this time, it is preferable to cut the horizontal line b at a predetermined pitch before forming. Therefore, as shown in FIG. 11, it is preferable to use a pair of concavo-convex toothed rollers rl, r2, Between the gaps η, make the rubberized fabric before one connection 4 The paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) 2 Please read the precautions on the back before filling this page) Order --- ------- 539629 A7 ___B7 _ 5. Explanation of the invention ($) d is passed, and then tension is applied to the horizontal line b to cut off. The symbol s in the figure represents the cutting part. In addition, as a result of further investigation, the inventors have learned that, in order to further improve uniformity, etc., rather than making the cutting pitch of the horizontal line b the entire width of the entire fabric d is uniform (uniform), it is better to change the width of the fabric d. The cutting pitch in the side edge region E (as shown in FIG. 9 (A)) is set to be smaller than the cutting pitch in the central region M between the side edge regions E and E. This is because in the central region M, the carcass filaments a are easily separated from the cut horizontal line b and become free. At the side edge of the fabric d, the lateral line b is folded into a C shape, and the carcass filament a After cutting, it is also entangled and constrained. During the forming, the carcass filaments are sparse and dense, which adversely affects the uniformity. In addition, the curtain fabric c, as is well known, is a curtain fabric c in which a single horizontal line b is continuously turned, and as shown in FIG. 9 (A), a plurality of cross-folds (tuck-in ) The line piece ba constitutes a curtain fabric c in a pleated manner of the horizontal line b, and the pleated line piece ba is formed by ending at both ends with a small long folded portion b3. However, the curtain fabric c of the horizontal folding method is formed on the side edge region E to form an overlapping portion (the base portion bl and the folded portion b3 of the horizontal fold line piece ba overlap), so the breaking strength is increased, and the carcass silk is increased. The binding force of a is higher than the winding method, so its uniformity is easier to decrease. [Disclosure of the invention] The object of the present invention is to provide a rubber-containing fabric for a tire, a method for manufacturing the same, a method for manufacturing a pneumatic tire using the rubber-containing fabric, and a pneumatic tire, which help to ensure that 'Joining strength' can greatly reduce the connection width, and can uniformize the carcass wire spacing during forming 'minus 5 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the note on the back first Please fill in this page for more details) Order ----------. 539629 A7 _ B7___ V. Description of the invention (屮) The tires with less so-called bumps and dents have poor appearance and improve uniformity. The first invention of the present invention is a rubber-containing fabric for tires, which is formed by weaving a curtain fabric with horizontal threads and a longitudinal cord composed of tire wires, and then covering the curtain fabric with rubber; The breaking elongation is 4 to 30% and the breaking strength is 3 to 15N. In this rubber-containing fabric, it is preferable to cut the horizontal line after the rubber coating, and to cut the pitch of the horizontal line on the side edge region of the rubber-containing fabric so as to cut off than the horizontal line on the central region. The pitch is also better. The transverse line cutting pitch on the side edge region is 1 to 4 times the implantation pitch of the tire wire, and the transverse line cutting pitch on the central region is 3 times the implantation pitch of the tire wire. ~ 5 times better. In addition, the second invention of the present invention is a method for manufacturing the aforementioned rubber-containing fabric in which a horizontal line is cut after the rubber is coated, and is characterized by including a step of adding rubber, using a horizontal line and a vertical line composed of tire wires. The curtain is woven into a curtain fabric, and then the curtain fabric is covered with rubber to form a fabric base; and a cross-line cutting step, the aforementioned cross-line of the fabric base is cut with a pressing tool, and the pressing tool is provided with a pair of peripheral The jaw-shaped rollers extending in the direction are spaced apart from each other in the axial direction so that the pair of jaw-shaped rollers face each other in parallel, and the jaw portions of one of the jaw-shaped rollers are not in contact with each other. The concave portion between the claws of the spur-toothed rollers has a continuous gap between the spur-toothed rollers in the axial direction, and is continuous with the axis of the spur-toothed rollers by a horizontal line. Parallel directions pass the fabric substrate through the gap. 6 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the notes on the back before filling this page) Order ---------- Line release. 539629 A7 _______B7 —___ V. Description of the invention (Even) Furthermore, in the case of the above-mentioned tooth-shaped roller, the axial width α of the claw portions on both end portions in the axial direction and the separation of the adjacent claw portions in the axial direction The distance / 3 is preferably smaller than the aforementioned width α and the separation distance A on the central portion. The third invention of the present invention relates to a method for manufacturing a pneumatic tire using the aforementioned rubber-containing fabric for a carcass layer. The method includes a connecting layer forming step of cutting the rubber-containing fabric in a direction intersecting with its side edges. A cutting piece is formed, and then a connection layer is formed between the ends of the side edges of the cutting piece to form a connection layer; and a carcass layer forming step, winding the connection layer on a drum in a circumferential direction, and connecting the connection layer A second connection is made between the two ends in the circumferential direction of the layer to form a cylindrical carcass layer; and the transverse line is cut off before the carcass layer forming step, and each connection of the primary connection and the secondary connection is formed. In the part, three or more carcass filaments do not overlap. Furthermore, it is preferable that the horizontal line is cut in advance at the step of the rubber-containing fabric, and the connecting portion is preferably formed by butt-joint in which the end surfaces of the respective ends are face to face joined to each other. The fourth invention of the present invention is a pneumatic tire, which is manufactured by using the manufacturing method according to the third invention. [Best Mode for Carrying Out the Invention] An embodiment of the present invention will be described below based on the drawings. FIG. 1 is a cross-sectional view of a pneumatic tire 1 according to this embodiment using a rubber-containing fabric as a carcass layer. In Figure 1, an example of a pneumatic tire 1 is a radiating layer tire for a passenger car, which has a thread portion 2 and a radius from the two sides to the tire 7 The paper dimensions are applicable to Chinese national standards (CNS ) A4 specification (210 X 297 Public Love 1 " (Please read the precautions on the back before filling this page) -1 nn ϋ I n a I iHBi 11 1 ϋ nn 1 539629 A7 ___B7__ 5. Description of the invention (6) Direction A pair of side-wall portions 3 extending inward, and a bead portion 4 located at the inner end of each side wall portion 3. The pneumatic tire 1 has a ring that spans between the aforementioned bead portions 4, 4 Toroidal carcass 6 and a belt layer 7 disposed inside the tread 咅 β 2 and outside the tire radial direction of the carcass 6 〇 The carcass 6 is composed of 1 6A or more carcass layer (1 in this example). The carcass layer is formed by arranging carcass filaments at an angle of 75 ° to 90 ° to the tire circumferential direction. Carcass filaments are made of nylon, Organic fiber yarns such as polyester, polyester, and aromatic polyamide. The carcass layer 6A includes a main body portion 6a, from a tread portion 2 through a sidewall portion 3 to a bead portion 4 The bead core (bead-core) 5; and the fold-over part 6b, which is continuous on both sides of the main body part, is folded around the bead core 5 from the tire shaft direction inside to the outside and is locked. A bead-apex rubber 8 extending thinly from the tire core 5 to the outside of the tire radial direction from the tire core 5 is arranged between the turn portion 6b and the turning portion 6b to improve the bending rigidity of the tire portion 4. The aforementioned endless belt layer 7 is formed of two or more belt-ply layers 7A and 7B (in this example, two belt-ply) 7A, 7B. They are arranged obliquely at an angle of 35 °. The loop belt layers 7A and 7B are arranged in such a way that the loop belt wires cross each other to change the direction to exert the hoop effect. The loop belt wire is suitable for steel wire, but it can also be used. For example, highly elastic organic fiber yarns such as aromatic polyamide fibers and aromatic polyester fibers. Next, the aforementioned pneumatic tire 1 is formed by a tire manufacturing method described below. The manufacturing method of the tire includes a connecting layer forming step S1 (Such as 8 paper sizes applicable to China National Standard (CNS) A4 specifications (210 X 297 mm (Please read the back of the precautions to fill out this page)

539629 A7 _____ B7__ 5. Description of the invention (1) as shown in Figure 2) and carcass layer forming step S2 (as shown in Figure 3), the green tire thus formed will be vulcanized and shaped to form the tire in the same way as conventionally. 1 ° Here, as shown in FIG. 2, the connection layer 18 is formed by using the long rubber-containing fabric 10 with parallel edges on both sides as an inversion, as shown in FIG. 2. The aforementioned rubber-containing fabric 10 is a curtain fabric 14 that is woven with fine horizontal threads U ′ and longitudinal threads 12 composed of carcass filaments 13 of organic fibers, and is first subjected to a dip treatment (then Agent coating treatment), and then, the rubber 15 is coated on both sides and above. Further, the rubber-containing fabric 10 is cut into a plurality of cutting pieces 10A at a desired angle 0 (about 75 to 90 ° with a radiating layer tire) and a length corresponding to the width of the carcass layer, and then the cutting pieces are cut into pieces. The end portions 10e on the side edges (non-cutting side) of 10A are sequentially connected (primary connection jl) to form a connection layer 18, and the carcass filaments 13 thereof are aligned at the aforementioned angle with respect to the length direction.

Next, in the carcass layer forming step S2, the aforementioned connecting layer 18 is cut to size and wound on the drum in the circumferential direction, and the two ends in the circumferential direction are connected (secondary connection j2) to form a circle. The tubular carcass layer 6A is different from the conventional one in that the above-mentioned horizontal line 11 sets the breaking elongation in the range of 4 to 30% and the breaking strength in the range of 3 to 15N. And use a thread that is very easy to break compared to the conventional one. The so-called "elongation at break" refers to the application of a tensile load to the horizontal line slowly and continuously. The maximum elongation (%) when the horizontal line breaks is measured by a distance of 250 legs between chucks and an initial load of 0.1N. 2. The test speed was 300 mm / min, and the strength when the wire was broken was measured as the "breaking strength". 9 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) f Please read the notes on the back before filling in this page>

539629 A7 _ B7____ 5. Description of the invention (none) The breaking elongation and breaking strength can be set in the aforementioned range by adjusting the material, thickness, and winding structure of the organic fibers (including synthetic fibers and natural fibers) used. For example, using SPUn yarn (thickness of size 20), it can be set to break elongation (5 ~ 8%), break strength (4 ~ 5N) 〇 It is different from the other one The point is that the horizontal line 11 is cut in advance before the carcass layer forming step S2. The cutting of the horizontal line 11 is performed before the aforementioned carcass layer forming step S2 and after the impregnation treatment of the curtain fabric 14, and there is no particular limitation, but the rubber-containing fabric 10 has been made in advance when it is formed. It is better to cut, which is to further improve the operating efficiency, the quality of the layer, or the uniformity. Here, the aforementioned rubber-containing fabric 10 having the horizontal line 11 cut in advance is formed by a manufacturing method including the following steps, and the rubber step is added to cover the upper portion of the curtain fabric 14 with rubber 15 to form a fabric base. 16; and a horizontal line cutting step, the aforementioned horizontal line 11 of the fabric base 16 is cut by a cutting tool 20. In addition, FIG. 2 illustrates a case where the aforementioned curtain fabric 14 is woven with a pleated pattern. That is, the transverse line 11 is composed of a plurality of cross-cut line pieces 17, and the cross-cut line piece 17 is composed of a base portion 17a and a folded portion 17c. The base portion 17a alternately passes up and down the carcass filament 13 and is connected with the tire. The body wire 13 extends at a right angle over substantially the entire width of the curtain fabric 14; the fold portion 17c is folded inward through the auxiliary portion 17b extending parallel to the carcass wire 13 from both ends of the base portion and ends in a small length. In addition, the horizontal pleating line sheet 17 is arranged at a pitch l substantially equal to the length of the aforementioned auxiliary part 17b along the long side direction of the carcass filaments 13. This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297). (Gongchu) (Please read the notes on the back before filling out this page) ----- 丨 丨 Order ------- · line · 539629 A7 ____B7____ 5. The description of the invention (^) is formed. The length W3 of the folded portion 17c is not particularly limited, but if it is too small, the horizontal pleats 17 become easy to loosen, and if it is too large, the effect of improving productivity becomes small. Therefore, the aforementioned length W3 is at least 20 mm or more, preferably 20 to 300 legs, and more preferably 30 to 70 mm. In a side edge region E of the fabric base 16 using the curtain fabric 14 (area having a width of at least 20 band width W1 in the width direction from the side edge of the fabric base), the base portion 17a of the horizontal line 11 and the folded portion Two of 17c overlap each other 'but in other parts', that is, in the central region M between the side edge regions E and E, the horizontal line 11 is constituted only by the root of the base 17a1. Further, in the aforementioned horizontal line cutting step, the horizontal line 11 of the fabric base 16 is cut by a cutting tool 20. Furthermore, since the fabric base 16 is already covered with the upper rubber 15, even if the transverse threads 11 are cut at this stage, the arrangement of the carcass filaments 13 will not be disturbed. The above-mentioned pressing tool 20 is constituted by a pair of sprocket-shaped rollers 21, 21 arranged in parallel, as shown in Fig. 4, for example. Each toothed roller 21 is attached to a cylindrical base shaft portion 22 extending in the axial direction. A rib-shaped claw portion 23 is provided in the axial direction so as to protrude its peripheral surface and extend in the circumferential direction. Each of the toothed rollers 21 is rotatably supported on both ends by a bearing (not shown) in a rotatable manner, and is driven to rotate in opposite directions by a motor or the like. In addition, the cutting tool 20 is such that the outer peripheral surface 23a of the claw portion 23 of one of the toothed rollers 21A faces the recess between the claw portions 23 and 23 of the other toothed roller 21B in a non-contact manner. As a result, the opposing claw portions 23 will mesh with each other and form 11 in the axial direction between a pair of reed-toothed rollers 21A and 21B. This paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm). ) (Please read the notes on the back before filling this page)

· I ------ order ---------- wire should be 539629 A7 ____B7____ V. Description of the invention () Continuous gap 25 with convex and concave shape. The fabric base 16 is passed through the gap 25. At this time, the horizontal line 11 fits in a direction parallel to the axial direction of the sprocket-shaped roller 21. Thereby, as shown in FIG. 11 described above, the fabric base 16 is stretched and applied with a wave-like undulation, so that the breaking elongation and breaking strength of the horizontal line 11 are reduced, and the horizontal line 11 can be broken The cutting portion 9 is cut accurately with a desired cutting pitch CP corresponding to the formation pitch of the claw portion 23 described above. In addition, the meshing height r between the rollers 21 and 21 may be small. Therefore, it is possible to reduce the irregularity of the wire after cutting and the undulation of the fabric base 16. In addition, in the cutting portion 9 described above, for example, at least one of the two overlapping horizontal lines 11 in the side edge region E may be cut. In this way, since the horizontal line 11 is cut in advance, during the molding, the horizontal line 11 will be stretched in the circumferential direction, which can reduce the force acting on the connection portion in the direction of opening. In addition, the length of the transverse line 11 after cutting is long in a certain period, the fracture elongation and breaking strength of the aforementioned transverse line 11 are also small, so the transverse line 11 will also automatically use the tension during forming. Since it is cut, the force acting in the opening direction of the connection part J becomes small. Here, in the case where the elongation at break of the transverse line 11 is greater than 30% and the breaking strength is greater than 15N, the transverse line 11 is also difficult to be cut by the cutting tool 20, and the connection part may be opened during molding. . In addition, when the elongation at break is less than 4 and the breaking strength is less than 3N, the horizontal line is easily broken in the curtain weaving or the impregnation treatment, and the wire is not uniform, and the function of the horizontal line cannot be obtained. From this viewpoint, the fracture elongation is preferably 4 to 25%, 4 to 15%, or 4 to 10%, and the fracture strength is preferably 3 to 13N, 3 to 10N, or 3 to 7N. 12 This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) -Install -------- Order ------ --- 539629 A7 ______B7_ V. Description of the invention (丨 丨) It also acts on the aforementioned connecting part; [the force in the opening direction becomes smaller, so in the present invention, 'the aforementioned primary connection; Π and secondary connection〗 2 In the case of overlapping joining, as shown in FIG. 7, three or more carcass filaments 13 may be joined without overlapping each other. That is, the carcass filaments 13 may be joined with a width JW of two or less. Also, as shown in FIG. 8 (A), a docking method can also be adopted, which involves facing the end faces S (or the end faces S of the end portions 18e and 18e) of the aforementioned end portions 10e and 10e to each other. The number of overlaps of the carcass filaments 13 was zero. Therefore, to ensure the necessary joint strength at the aforementioned connecting portion, the width of the connection can be greatly reduced, and in addition to reducing the appearance of bumps and depressions, uniformity can also be improved. Furthermore, as for the aforementioned butt joint, in order to further increase the pressure contact force of each end surface S ', as shown in FIG. 8 (B), it is preferable to use a pair of tapered upper and lower gyro bodies 30U, 30U, 30L, and 30L for bonding. The gyro body is described by taking the top gyro body 30U as an example. The smallest diameter portions 31A of the tapered surfaces 31 are close to each other, and the rotating shaft core N is formed at an angle parallel to the layer with the lowermost generatrix 32 of each tapered surface 31. Slanted configuration. In addition, the gyro body 30 is controlled at the same speed as each other's rotation. When the gyro body 30 is rotated, the end faces S, S are elastically pressed in the face-to-face direction, which can improve the joint strength. Secondly, as a result of research by the present inventors, in order to further improve uniformity and the like, as shown in the foregoing FIGS. 6 (A) and 6 (B), instead of setting the cutting pitch CP of the horizontal line 11 between the fabric 10 and the The full width is constant (uniform), it is better to set the cutting pitch CP2 on the side edge region E of the fabric 10 to be smaller than the cutting pitch CP1 on the aforementioned central region M. 13 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) -I — ^ 1 ϋ ni ϋ nn 1 ϋ ϋ mnn 539629 A7 _B7__ 5 Explanation of the invention () This is because, as mentioned above, in the side edge region E, the binding force of the cut transverse carcass filaments 13 of the carcass filaments 13 is higher than that of the central region M, so the carcass filament spacing during molding becomes different. It is uniform and becomes dense in the side edge region E and thick in the central region M, which adversely affects uniformity. In particular, in the case of the pleating method of the curtain fabric 14 described above, the horizontal line 11 overlaps two in the side edge region E, so the deterioration of uniformity tends to be stronger. Therefore, it is desirable to make the ratio CP1 / CP2 smaller than 1.0. Therefore, in this example, as shown in FIG. 4, in the sacral toothed roller 21, the both end portions 26 that cut the side edge region E of the fabric base 16 are related to the center region M that is cut. Compared with the central portion 27, as shown in FIG. 5 (A), the width α of the claw portion 23 in the axial direction and the separation distance / 3 of the claw portions 23 and 23 engaged with each other are smaller. The width W1 from the side edge of the side edge region E is preferably 20 to 300 mm, and more preferably 30 to 70 mm. Here, as shown in FIG. 6 (B), the aforementioned width α of the claw portion 23 in the aforementioned central portion 27 is preferably about 1.4 to 1.6 times the implantation pitch P of the carcass filament 13 of the fabric base 16. In the central portion 27, it is desirable that the separation distance / 3 is 1.4 to 1.7 times, preferably 1.45 to 1.60 times, the thickness t of the fabric base 16. In addition, the overlapping height in the radial direction of the claw portions 23 and 23 engaged with each other at the central portion 27 is the engagement height r, and it is desirable to set the engagement height r to be approximately 1.4 to 2.0 times the implantation pitch P of the carcass filament 13 described above. , Preferably about 1.6 to 1.8 times. Furthermore, the radial distance 5 between the outer peripheral surface 23a of the claw portion 23 and the outer peripheral surface 22a of the aforementioned base shaft portion 22 is a distance sufficient to allow the fabric base 16 to pass smoothly, and the paper 14 is applicable to the paper size. China National Standard (CNS) A4 Specification (210 X 297 mm) (Please read the notes on the back before filling this page)

-I · ϋ n I n 1 «ii ·· n one to 0, I 1 * Iff n ϋ—« ϋ ϋ— I line t · 539629 A7 V. Description of the invention (β) Thickness of base 16 t ^ L1 ~ 5 · In the central part 27 of this dentate roller, the central area M of the fabric base 16 is cut, and as shown in FIG. 6 (A), the horizontal line 11 can be planted with the carcass filament 13 Into the cutting pitch CP1 about 3 to 5 times of the pitch P to cut. Furthermore, 'the cutting pitch CP1 does not need to be constant as long as it is within the aforementioned range. In the two end portions 26 and 26, the aforementioned width α of the claw portion 23 is approximately 0.8 to 1.2 times the implant pitch ρ, and it is desirable to set the aforementioned separation distance to approximately 1.2 to 1.3 times the thickness t. By this means, the two end portions 26 and 26 can be cut by 1 to 5 times of the aforementioned implantation pitch P, as shown in FIG. 6 (B), and more preferably 2.5 to 3.5 times the range of cutting. The breaking pitch CP1 is a small cutting pitch CP2 to cut the transverse line 11. Furthermore, the aforementioned engagement height r on the both end portions 26 is not particularly limited, but if it is too large, the carcass filament 13 is easy to open. , On the contrary if it is too small, the horizontal line It is easy to reduce the cutting effect. Therefore, it is desirable to set the meshing height r to be about 0.8 to 1.5, preferably 1.0 to 1.2 times & the right side of the carcass wire 130 implantation pitch. It is substantially the same as the central portion 27. Therefore, in this example, since the cutting pitch CP2 'of the horizontal line 11 on the side edge region E is made smaller than the cutting pitch CP1 on the central region μ, the cutting The binding force of the broken transverse carcass filaments 13 is reduced in the side edge region E, so that the spacing of the carcass filaments during forming can be made uniform. As a result, the uniformity can be further improved. Furthermore, in order to improve the uniformity, I hope that the above-mentioned cutting pitch 15 paper size will be applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) -ϋ. ^ 1 -ϋ n ϋ i_i n-OJ · IV ϋ ϋ a— nn I, 539629 A7 __B7 ___ 5. The ratio of the description of the invention (#) CP1 / CP2 is 1.1 ~ 2.0, or in the range of 1.2 ~ 1.4. Above, as far as the present invention is concerned, The preferred embodiments have been described in detail, but the present invention is not limited to the illustrated embodiments, and may be modified into various states. Implementation (Operational Aspect A) There is a radiation layer tire for a passenger car (tire size: 195 / 65R15), which has a basic structure as shown in FIG. 1 and uses the rubber-containing fabric shown in Table 1 for The carcass layer is based on the tire manufacturing method of the present invention to test the radiating layer tire for passenger cars, and the uniformity and appearance quality of each test tire are tested. In this embodiment A, The horizontal line and the horizontal line in the central area are cut at the same cutting pitch CP. (1) Uniformity: Measure the low-speed RFV, high-speed RFV, and high-speed TPV of the test tires (5 each) under the internal pressure (200kPa) and load (4510N) in accordance with JASOC607 (the uniformity test method for tires for automatic vehicles). , And expressed as the average 値. Furthermore, when the low speed is a peripheral speed of 7 km / h, the high speed is a case where the peripheral speed is 120 km / h. (2) Appearance quality: The internal pressure (200kPa) of the tires for each test was tested, and the extent of the occurrence of bumps and depressions on the side wall surface was evaluated visually by the inspector, and expressed by the 5-point method. A larger 値 indicates better appearance. 16 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

539629 A7 B7 V. Description of the invention (π) [Table 1] Comparative Example A1 Carcass silk material polyester polyester thickness 1500dtex / 2 1500dtex / 2 Transverse line material polyester / cotton thickness is equivalent to 700dtex 20 Elongation at break (%) 100 5 Breaking strength (N) 5 5 Welding method Overlaid overlaid Overlaid overlaid (number of filaments overlapped) (5) (1) Existence of horizontal line cutting step Μ j \\\ Opening of connection part ΛττΤ. Μ / fcrr Μ Uniformity Low-speed RFV < N > 60 50 High-speed RFV < N 120 > 120 100 High-speed TFV < N > 80 40 Appearance quality 3 4.5 (Please read the precautions on the back before filling this page) As shown in Table 1 It is shown from the results of Example A1 that the breaking elongation and breaking strength of the horizontal line have been reduced to a predetermined range, and that the horizontal line is cut in advance by a sacral roller, so the necessary joint strength is ensured. 'At the same time, the connection width can be greatly reduced, and the appearance performance and uniformity can be improved. (Embodiment Aspect B) As shown in Table 2, the width of the claw portion α, the separation distance / 5, and the meshing height r on both ends of the spur-toothed roller were changed, and a trial was made based on the tire manufacturing method of the present invention. Radiation layer tires for passenger cars (tire size: 195 / 65R15), which use rubber-containing fabrics that have a transverse line cutting pitch CP2 in the side edge region and a transverse line cutting pitch CP1 in the center region, are used for the carcass layer. In addition, the uniformity and appearance quality of the test tires were tested. 17 This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 539629 A7 _B7___ V. Description of the invention (A) (1) Uniformity: According to the aforementioned JASOC607, the internal pressure (200kPa), load (4510N ), The high-speed RFV (circumferential speed of 140 km / h) of the test tire was measured, and Example A2 was taken as an index of 100. The larger the number, the better. (2) Appearance quality: The inner pressure of the tire (300kPa) is tested, and the degree of bulges and depressions on the surface of the side wall and the state of undulations on the side wall surface are inspected by the inspector's eyes and touch. (undulation) Make a comprehensive judgment. The results are shown by taking the index of Example A2 as 100. The larger the number, the less obvious the degree of ridges and depressions, and the degree of undulations, indicating good results. 18 This paper size applies to China National Standard (CNS) A4 (21〇X 297 public love) (Please read the note on the back before filling this page) —I mmM§ im n · fl aw _ 539629 A7 B7 5 Description of the invention () Table 2 SI * 槃 01 01

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d9.I 001 001 001 [%] «Tight 锵 蝱 v「 / ¥ ^ §5 震 傻 _ 鹱 〔N】 sf 娌 火 si¾ [屋 1¾ 霞 塞 一} ((hired ifiirii mum *) This paper is applicable to China Standard (CNS) A4 specification (210 χ 297 mm) 19 539629 A7 ____B7__ V. Description of the invention (β) (Please read the precautions on the back before filling this page) As shown in Table 2, from the examples B1 to B5 As a result, it was found that because the transverse line cutting pitch CP2 of the side edge region was smaller than the transverse line cutting pitch CP1 of the central region, the distance between the carcass filaments during inflate was more uniform, and Compared to Example A2 with a constant distance (CP1 and CP2), the bulge and depression and uniformity are better. Furthermore, in Example B4, the width α The distance S is too small, the wave-like deformation of the fabric substrate becomes stronger, and the phenomenon of wave-like undulations is reduced. [Industrial Application Possibility] Above, the rubber-containing fabric of the present invention is useful in the formation of a carcass layer of a pneumatic tire, and helps In order to reduce the appearance of the tyre which has bulges and dents and improve the uniformity. [Simplified description of the figure] Figure 1 It is a cross-sectional view showing a preferred embodiment of the pneumatic tire of the present invention. Fig. 2 is a diagram illustrating a step of forming a connecting layer of a tire manufacturing method. Fig. 3 is a diagram illustrating a step of forming a carcass layer of a tire manufacturing method. 4. Front view of the mooring cutter. Fig. 5 (A) is an enlarged sectional view of the mooring cutter. Fig. 5 (B) is a cross-sectional view of the fabric base. Figs. 6 (A) and 6 (B) are horizontal views. Sectional view of a rubber-containing fabric with a thread cut. Figure 7 is a cross-sectional view of the joints when they are overlapped and joined. 20 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 539629 A7 _B7___ V. DESCRIPTION OF THE INVENTION (θ) FIG. 8 (A) is a cross-sectional view showing a connection portion in abutment. FIG. 8 (B) is a line drawing showing the joining method. FIG. 9 (A), FIG. 9 (B), Explains the line drawing of the conventional carcass layer. Fig. 10 is a cross-sectional view illustrating the connecting portion in Fig. 9. Fig. 11 is an enlarged cross-sectional view illustrating the pressing step. [Notation] 1 Pneumatic tire 2 Tire tread portion 3 Side wall portion 4 Beads * 5 Bead VII, 6 Carcass 7 Annulus layer 8 Bead apex rubber 10 Rubber cloth 11 horizontal line 12 vertical line 13 tire wire 14 curtain fabric 21 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page)

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Claims (1)

539629 A8 B8 C8 D8 / 、 Applicable patent scope L A rubber-containing fabric for tires is made by weaving a horizontal line and a longitudinal cord composed of tire wires into a curtain fabric, and then covering the curtain fabric with rubber. It is characterized in that the elongation at break of the transverse line is 4 to 30% and the breaking strength is 3 to 15N. 2. If the rubber-containing fabric for a tire according to item 1 of the patent application has a cut portion in the horizontal line, the cut portion will be cut after the aforementioned rubber coating. 3. If the rubber-containing fabric for the tire of item 2 of the patent application scope, the horizontal line is the cut between the above-mentioned cut-off portions in the area at least 20 legs away from the side edge of the rubber-containing fabric The breaking pitch is smaller than the cutting pitch between the cutting parts on the central region between the side edge regions. 4. For example, the rubber-containing fabric for tires in the scope of patent application No. 3, wherein the cutting pitch on the side edge region is 1 to 4 times the implant pitch of the tire wire, and the cutting pitch on the central region is The pitch is 3 to 5 times the implant pitch of the tire wire. 5. If the rubber-containing fabric for tires according to any one of the scope of the application for items 1 to 4, the horizontal line is a plurality of horizontal pleated pieces to be approximately equal to the length of the auxiliary part in the vertical direction The pitch is arranged at intervals; the horizontal pleating piece is folded back inward from the base portion extending substantially the full width of the curtain fabric and the auxiliary portion extending parallel to the tire wire from both ends thereof and ends at the side edge region. Composed of folds. 6. —A method for manufacturing rubber-containing fabrics for tires, which is a method for manufacturing rubber-containing fabrics for tires in the scope of patent application No. 2; characterized in that: ______1____ Applicable to China National Standard (CNS) A4 (210 X 297) (Mm) (Please read the notes on the back before filling this page) 539629 A8 B8 C8 D8 6. The scope of the patent application has the step of adding rubber, using horizontal threads and a longitudinal cord composed of tire wires to weave a curtain fabric, and then covering the curtain fabric with rubber to form a fabric matrix; and The thread cutting step is to cut the aforementioned horizontal line of the fabric substrate with a pressing tool; and the pressing tool is provided with a pair of sprocket-shaped rollers, which separate the rib-shaped pressing claws extending in the circumferential direction along the axial direction. It is set so that the pair of toothed rollers are parallel to each other, and the claw portions of one of the toothed rollers face the recesses between the claw portions of the other toothed rollers without contacting each other. There is a continuous gap between the dentate rollers along the axial direction in a convex and concave shape, so that the fabric substrate passes the clearance in a direction where the horizontal line will be parallel to the axis direction of the dentate rollers. A method for manufacturing a rubber-containing fabric for a tire, wherein the pressing tool is an axial width α of a claw portion on the both ends of the axial direction of the reed-toothed roller and a separation distance between adjacent claw portions in the axial direction. / 3, than 栉 toothed roller The aforementioned width α and the separation distance / 3 on the central portion are small. 8. A method for manufacturing a pneumatic tire using the rubber-containing fabric of the first patent application scope for a carcass layer; characterized in that it has a step of forming a connecting layer for intersecting the aforementioned rubber-containing fabric with its side edge Cutting in the direction to form a cutting piece, and forming a connection layer between the aforementioned side edges and side ends of the cutting piece once; and a carcass layer forming step, winding the connection layer on a drum in a circumferential direction to connect the connection The two layers of the circumferential direction of the two layers are connected twice to form a cylindrical carcass layer; and _____2_____ This paper size applies to the Chinese National Standard (CNS) A4 specification (210 x 297 mm) (Please read the back (Please fill in this page again) 539629 A8 C8 D8 6. Scope of patent application The aforementioned horizontal lines are cut off before the step of forming the carcass layer, and in each of the connection portions of the primary connection and the secondary connection, three or more carcass wires do not overlap up and down. 9 · If the method of manufacturing a pneumatic tire according to item 8 of the patent application 'The cutting of the horizontal line is in the case of the rubber-containing fabric used for the aforementioned tires', the curtain fabric is cut after it is covered with rubber. . 10. For a method of manufacturing a pneumatic tire according to item 8 or item 9 of the scope of patent application, the primary connection and / or secondary connection connection portion 'is a butt joint in which the end surfaces of the aforementioned end portions face each other and are joined. 11. A pneumatic tire characterized by being manufactured by a manufacturing method according to any one of items 8 to 10 of the patent application park. This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm: .........------ -(Please read the precautionary note on the back to buy a copy) Order ί